Home / 109,121.28-163,616.04-42,548.64

Finding the Fourth Proportional to 109,121.28, 163,616.04 and 42,548.64

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Solution

The fourth proportional to 109,121.28, 163,616.04 and 42,548.64 is: 63,797.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,121.28 : 163,616.04 = 42,548.64 : x
  2. Step 2: Convert to fraction form
    109,121.28/163,616.04 = 42,548.64/x
  3. Step 3: Cross multiply
    109,121.28x = 163,616.04 × 42,548.64
  4. Step 4: Simplify right side
    109,121.28x = 6,961,639,984.19
  5. Step 5: Solve for x
    x = 6,961,639,984.19/109,121.28
  6. Step 6: Final answer
    x = 63,797.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.